00:01
When we answer questions about scientific method, we always have to remember that any question you want to answer has to be measurable and the experiments have to be repeatable.
00:14
So if we look at our four options here, we have how much money does women versus men make? how much does one person love another person? does coffee raise your blood pressure and is one pack of cigarettes better for you than another? so if we're examining contents of cigarettes, yes, that is measurable and repeatable.
00:38
That's scientific.
00:40
Does coffee raise your blood pressure? again, measurable.
00:43
We're measuring blood pressure, and you can repeat that experiment.
00:47
How much does one person love another? you might be able to ask questions to that person, but you have no hard data.
00:55
Therefore, it is not considered measurable in the scientific sense.
01:00
And that is going to be the one that does not.
01:03
Fit the scientific method.
01:07
So we're going to look at scientific method and forming hypotheses.
01:11
Again, you want to make sure that this question is measurable and you can have repeat experiments on it.
01:19
So up at the top, do colds come from lower temperatures? so you can collect data on how often people get a cold when the temperature is low versus when it's not.
01:33
So yes, that is a good hypothesis.
01:36
Next step, colds happening to good and bad people.
01:41
That is subjective if a person is good or if they are bad.
01:46
If it's subjective, you're not going to get a lot of hard data on it, and therefore, that is not a good hypothesis.
01:55
Another option was, is it unethical to go to school if you have a cult? anything with ethics, just like the good versus bad people, is subjective, and it's not going to make for good, hard data.
02:08
And then lastly, should the virus be allowed to reproduce? again, that is ethics.
02:13
Do you believe that we should preserve the sanctity of life in every single form, even in viruses? or should we try to eradicate it? ethics, not good for hard data.
02:25
That is not the one you want to go with.
02:28
Continuing with this, we have controlled experiments.
02:31
Controlled experiments are very important because they give us repeatable data.
02:36
So some of the options for what do we need for a controlled experiment, making sure that it's very slow.
02:44
Not all experiments are slow.
02:45
We have experiments on the speed of light, so that is not necessary.
02:50
Having treatment versus control.
02:53
Now what this means is that you have some participants or some part of the experiment that is treated in a certain way versus some that is left to normal conditions.
03:07
So that way you can compare if you're doing good or if you're doing bad.
03:13
So that is repeatable and that does give you hard data...